Protective hood



R. N. SCHROEDER PROTECTIVE HOOD I Filed July 30, 1945 f IO 3 I INVENTOR.B1455 Eff jc'hr'aa c161 %MMW Patented Aug. 17, 1948 UNITED STATES PATENTorncs PROTECTIVE HOOD. BusselLN. Schroeder, Inglewood, Calif.Application July 30, 1945, Serial No. 607,685

My invention relates to a protective device or hood. particularlydesigned to be worn by operatorszof spray gun equipment, althoughequally valuable for use in workingconditions in whichtheremaybedan-gerto-the operator by reason of the presence of poisonousfumes orfine dust particles in the atmosphere.

In many industries harmful conditions are present, and the use of thehood of my invention in paint spraying is described as an example ofsuch conditions, but it will be understood that the use of the hood isin no way restricted to this use. The operator of spraying equipmentevenwhen working in the open air is exposed to a cloud of particles ofthe material being sprayed which are usually injurious to the eyes andrespiratory tract of the operator. Further, such spraying operations areoften carried on in closed chambers, such aschemical reaction vessels,to which protective inner coatings are being applied byspraying, underwhich circumstances the atmosphere can become highly poisonous.

Spraying equipment is commonly transported from job to job. and it mayeasily happen that the material to be sprayed works into the means forsupplying air to the hood. Most spraying work consumes considerable timeand it is very desirable, therefore, that any hood worn by the operatorshould be comfortable, and that he should have an adequate field ofview.

The general object of m invention is to provide a hood havingcharacteristics particularly fitting-it tomeet. the various conditions.outlined above.

An object. of. the invention is toprovide a protective hood or devicehaving a crown member spaced from the head of the operator to support anairhose, the crown member being attached to a light, adjustable-headband.

A further object of the invention is to provide an outlet tube for theair hose fitted with a nozzle arranged to filter the air and to dispenseit so as to obtain a satisfactory clearing action on a clear view panelwith which the hood is fitted, and also to silence the issuing air.

A still further object of the invention is to provide a hood so arrangedthat the wearers head is surrounded with air under sufficient pressureto prevent the entry of fumes into the hood.

A still further object of the invention is to provide a hood of simpleconstruction while incorporating all necessary adjustments, provisionbeing made for readily separating the parts of the hood for cleaning orreplacement purposes.

Further objects and features of the invention whims. (Cl. 12.81421).

will hereinafter." appear in the. followingv descnim tion taken inconjunction. with the. accompanyin drawings.

The invention is: herein described. and. ilI-uSr tratedin a preferredform; but: it: is; to begunder stood that the scope of the. invention.is. not in anyway; limited: by this illustrative; showing but only as;indicated by the. scope of the appended claims;

In the. clrawingsarlig. 1: is a general view showing the, hood in,operative: condition;

Fig. 2: a cross-section, throu h: theaair inlet nozzle drawn. to a.much. larger scale; and

Fig. 3 is a bottom'view of: the tip; of the. air inlet.nozzleshowingrtha arrangement of assages for-the outlet 01- air into.the. hood.

In Fig. I the: numeral; l0} indicates. a sack-like fabric. bodyof thehood which is: secured. to a. head. band I2. by lacing passed throu hholes H: thereim I-lieact band: t2 may-bev adjustable: by any: suitablemeans: not shown, The body of the hood is furnished with a transparent.panel" M, preferably; curved; so. as to. afford. a wide: angle. ofvision. to a wearer; The; transparent panel may be made from a, plasticmaterial, and: secured to the hood: in any suitable manner such as. byrivets; l5-

The hood is: furnished with a drawstring iii positioned so thatit may becinched around the wearers neck toprovide sufficient resistance totheflow of" air toinsure that a body of airunder sufficient pressure toprevent the entry of outside air is maintained: within the hood.

The upper end of the hood: may be closed by lacing permittingreadyaccess to the airhose and outlet tube, which tube may pass throughthe laced: portion of the v hood.

The lower part or the body: or the hood is furnished with a flared skirtl8 shaped todrape comfortably over the shoulders of the wearer andafiord protection against material falling from overhead surfaces onwhich paint or other material is being sprayed.

The upper portion of the hood includes an arched member 20 connected tothe back of the head band and supported at its other end by a spacingmember 2i attached to the head band. The air hose 22 is arranged to lieover the arched member to which it may be tied, and is attached to avertically arranged outlet tube 2 4. The outlet tube passes through anaperture in the arched member and is provided with a perforated tip 26positioned above the eye level of the wearer between the head band andarched member, and is tied to said members as at l3.

The outlet tube and tip are shown in detail in Fig. 2, from which itwill be noted that the tip is of thick walled material, such as plastic,in which orifices 28 are bored, as indicated in Fig. 3, to direct theissuing air outwardly and downwardly over the inner surface of thetransparent panel [4 for the purpose of keeping the panel clear of fogcaused by condensation of moisture thereon.

It will be understood that air under pressure issuing directly from aseries of small apertures would cause a high pitched hissing soundwhich. might cause an appreciable nervous strain in some individuals ifthe were continuously exposed to it. For the purpose of breaking up thestream of air flowing to the orifices 28, I arrange a pad of felt toabove the orifices. The bodygof the tube 24 is filled with filteringmaterial, indicated by 32, which may be formed of carbon granules ofrelatively small size. To separate the filtering material from the feltI provide a fine mesh screen 34 of brass or other suitable materiallying on the surface of the felt pad, and the filtering material may be.retained in position by second screen 36 arranged at the upper end ofthe filter.

The purpose of the filter is to' prevent the ejection into the hood ofmaterial being sprayed as may happen under certain conditions, or anyparticles that may work into the air hose.

In order to keep the head of the hood clear ofpaint and the like, Iprefer to provide an outer cap 38 which may be secured to the hood inany suitable readily detachable manner.

It will be noted that all parts of the hood and air outlet tube and airhose may be readily demounted for cleaning purposes by unlacing theinner cap to permit removal of the air hose and tube, while the airoutlet tube, which is connected by a threaded union 40 to the air hose,

may be unscrewed from the union. Tip 26 may be unscrewed from the end oftube 24 and the filter material may be pushed out of the tube andreplaced by fresh material, as also may the felt pad positioned in thetip.

It will be evident that I have provided a comfortable and eflicient hoodfor use under the conditions met with in a large number of industrialoperations, and although one form of the invention has been particularlyshown and described, it is contemplated that various changes andmodifications can be made without departing from the scope of theinvention and it is intended to cover such changes and modifications ascome within the scope of the appended claims.

I claim:

1. A protective hood supplied with air under pressure including: a headband; a cap and sack- 4 a transparent panel in said body portion; asupporting member connected to said head band; an air hose positioned bysaid supporting member; an air outlet tube connected to said air hose;an air outlet tip at the lower end of said air outlet tube provided withapertures arranged to direct the issuing air against the inner face ofthe transparent panel; and a pad of fibrous material arranged above saidapertures to break up the column of air flowing toward said pertures.

2. A protective hood supplied with air under pressure including: a headband; a hood having a cap and a sack-like body portion supported by saidhead band; a transparent panel in said hood; an air hose and air outlettube positioned by said head band whereby air is admitted into jsaidhood; filter means arranged in said tube;

an outlet tip for the air outlet tube provided with apertures directingthe air issuing therefrom onlike body portion supported by said headband;

to said transparent panel; a pad of permeable material arranged betweenthe filter and the tip to break up the flow of air to said apertures;and a drawstring arranged around said body portion whereby the hood maybe drawn around th neck of the wearer to maintain sufficient airpressure in the hood to prevent the entry of the adjacent atmospherethereto.

3. A protective hood as set forth in claim 2 and in addition comprisinga detachable cap covering the cap of the hood and serving to protect itagainst falling material.

4. A protective hood supplied with air under pressure including: a headband; a hood having a cap and sack-like body portion supported by saidhead band; a transparent panel in said body portion; an air hoseextending into said body portion supported by said head band; an airoutlet tube on the inner end of said air hose; a tip at the end of saidtube provided with apertures constructed and arranged to direct theissuing air against the inner face of the transparent panel; and meansbetween said tip and said hose to break up the column of air flowingtoward said apertures.

RUSSELL N. SCHROEDER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,113,062 Sparks Oct. 6, 19142,259,680 Caudell Oct. 21, 1941 2,377,122 Bakke May 29, 1945 FOREIGNPATENTS Number Country Date 442,224 Great Britain Feb. 3, 1936

